I'm a lot older than you, but I do remember being 18. I also have a son in his early 20's, so have observed "18" fairly recently. It can be a difficult time, diabetic or not. You are possibly young enough for there to be a cure in your lifetime, but, for the meantime, diabetes is part of your normal future. You will have to work it into whatever exciting, rewarding, or just plain normal things that you do with your life, along with being good at some things and hopeless at others. Being much older, I know many diabetics who have had good, happy lives, despite it all - and so will you.
But, you do need some help with occurrence and fear of hypos and I'm afraid I cannot offer any advice on that. I'm sure someone will be along soon who can help. (I've just seen that someone has beaten me to it and raised the issue of pumps).
big hug!
Sally